Home / 291,011.04-401,591.16-163,686.78

Finding the Fourth Proportional to 291,011.04, 401,591.16 and 163,686.78

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Solution

The fourth proportional to 291,011.04, 401,591.16 and 163,686.78 is: 225,885.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,011.04 : 401,591.16 = 163,686.78 : x
  2. Step 2: Convert to fraction form
    291,011.04/401,591.16 = 163,686.78/x
  3. Step 3: Cross multiply
    291,011.04x = 401,591.16 × 163,686.78
  4. Step 4: Simplify right side
    291,011.04x = 65,735,163,856.86
  5. Step 5: Solve for x
    x = 65,735,163,856.86/291,011.04
  6. Step 6: Final answer
    x = 225,885.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.